Standards Group Adds Adaptive-Sync To DisplayPort 82
MojoKid (1002251) writes "Over the past nine months, we've seen the beginnings of a revolution in how video games are displayed. First, Nvidia demoed G-Sync, its proprietary technology for ensuring smooth frame delivery. Then AMD demoed its own free standard, dubbed FreeSync, that showed a similar technology. Now, VESA (Video Electronics Standard Association) has announced support for "Adaptive Sync," as an addition to DisplayPort. The new capability will debut with DisplayPort 1.2a. The goal of these technologies is to synchronize output from the GPU and the display to ensure smooth output. When this doesn't happen, the display will either stutter due to a mismatch of frames (if V-Sync is enabled) or may visibly tear if V-Sync is disabled. Adaptive Sync is the capability that will allow a DisplayPort 1.2a-compatible monitor and video card to perform FreeSync without needing the expensive ASIC that characterizes G-Sync. You'll still need a DP1.2a cable, monitor, and video card (DP1.2a monitors are expected to ship year end). Unlike G-Sync, a DP1.2a monitor shouldn't cost any additional money, however. The updated ASICs being developed by various vendors will bake the capability in by default."
Re:It's a great idea (Score:5, Insightful)
I have to wonder why we still use the concept of sync and porch and blanking interval and even frames, etc at all, when we all now run pixel-addressable digital displays rather than a magnetically confined analog electron beam physically sweeping over a surface.
"Tearing" results from the display updating halfway through a complete refresh. Why the hell do displays still do complete refreshes? No need whatsoever to update anything but the small subset of pixels that have changed. And no need whatsoever to do that in some blessed-from-on-high linear scan pattern from left-to-right top-to-bottom manner, either.
How about if the next gen of video hardware stops pretending it still needs to support CRTs, and we can all move on from caring about metrics like "refresh rate" that haven't meant a damned thing in over a decade?